Gas valves



Och 1958. c. c. LAMAR 2,855,953

GAS VALVES Filed Dec. 21, 1953 2 Sheets-Sheet 2 nited States GAS VALVESApplication December 21, 1953, Serial No. 399,400

1 Claim. (Cl. 137-5992) The present invention relates to gas valves andpar ticularly to gas valves for use with gas burners having two burnersections. Burners of this character are commonly called double burnersand the two burner sections are called the main and simmer burnersections. The primary object of the present invention is to provide anew and improved gas valve for a double burner, i. e., a new andimproved double gas valve.

Another object of the present invention is to provide a new and improveddouble gas valve for providing a desired sequence of operationsaccording to which a full supply of gas is supplied to both the main andsimmer burner sections in a first operative position to which the valveis moved from its off position.

A further object of the present invention is the provision of a new andimproved double gas valve providing a full supply of gas to both themain and simmer burner sections as the valve is turned in one directionto a first operative position from an off position, and providing,further, a full supply of gas to the simmer burner only upon continuedmovement in the same direction and providing, finally, a predeterminedlow supply of gas to the simmer burner only as the valve is moved in thesame direction to a limit position.

Another object of the present invention is to provide a new and improveddouble gas valve having the sequence of operations set forth in thepreceding paragraph and including a simplified system of gas flow andcontrol passageways whereby the valve can be made to be small in sizeand manufactured simply and economically.

In brief, the valve of the present invention includes a valve bodyhaving a tapered plug receiving chamber and a tapered plug mountedwithin the chamber. includes an inlet passageway, an outlet passagewayto the main burner opening to the plug receiving chamber at a pointaxially and angularly spaced from theinlet passageway and a simmerburner outlet passageway communicating with the end of the plugreceiving chamber. The rotatable valve plug includes an axial passagewayopen to the plug receiving chamber and the simmer burner outletpassageway and a pair of transverse passageways extending from the axialpassageway to the surface of the plug and a first of which is alignedwith the inlet and the second of which is aligned with the main burneroutlet passageway in the full on position of the valve to which the plugis operable from its olf position. These first and second passageways inthe plug are both axially spaced and angularly spaced from each otherand the spacing is such that the passageway which is aligned with themain burner outlet passageway in the full on position, the secondpassageway, is in registry with the inlet passageway in a full simmerposition, to which the plug is operable from its full on position.Accordingly, this passageway provides gas to the simmer burner in thefull simmer position of the valve.

The main burner outlet passageway and the second passageway in the plugare of smaller diameter than the inlet passageway and the firstpassageway in the plug,

The body atent Q "ice 2 and the angular spacing between the inlet andoutlet passageways is so small that, as the valve is turned from thefull on toward full simmer position the second passageway in the plugcomes into registry with the inlet passageway before the first one goesout of registry with the latter. As a result of the spacing, the valveplug and body can be made smaller and a so called carry over passagewaygenerally used in valves of this character is eliminated. The valve plugis provided with a further passageway including, preferably, adjustablegas flow restricting means and which passageway is eflectively angularlydisplaced from the other passageways so that in a still further positionof the plug, to which the plug is operable from a full simmer position,the simmer burner only is supplied with a predetermined low butadjustable quantity of gas. The gas flow adjusting means is preferablyof the stem adjustment type, i. e., the adjustment can be effectedthrough a hollow valve stem. The pas sageway through which gas issupplied to the simmer burner only at a low but regulatable rateincludes a portion extending to the outer surface of the valve plug andwhich is so located that it registers only with theinlet passageway inthe valve body and not with the main burner outlet passageway.

Other objects and advantages of the present invention will becomeapparent from the ensuing description of a preferred embodiment of thegas valve, in the course of which reference is had to the accompanyingdrawings, in which:

Fig. 1 is an enlarged top plan view of a double gas valve constructed inaccordance with the present invention, the valve operating handle beingomitted and the valve being in its full on position;

Fig. 2 is a side elevational view of the valve shown in Fig. l;

Fig. 3 is an end view of the valve, the view being from the outer orstem end;

Fig. 4 is a fragmentary cross sectional view taken along a horizontalplane passing through the axis of the valve plug and with the valve plugillustrated in its full on position;

Fig. 5 is a transverse cross sectional view taken approximately alongthe line 55 of Fig. 4; and

\Figs. 6, 7, 8 and 9 are flat developments of the valve body and valveplug surfaces in various positions of the valve, these being the off,the full on, the full simmer and the low simmer positions (as indicatedby the arrow in each figure) into which the valve plug is rotated insequence as it is moved in one direction from the off position, which isat one limit of movement of the valve plug, to the low simmer position,which is at the other limit of movement of the valve plug.

Referring now first particularly to Figs. 1, 2, 3 and 5, the double gasvalve of the present invention is indicated as a whole by referencecharacter 10. It comprises a valve body 12 having a plug receivingchamber with a conical inner surface 14 and within which is mounted arotatable control member illustrated as the tapered or conical plug 16.

The plug is provided with an axial passageway 18 (see Figs. 4 and 5)providing communication between the interior of the valve plug and thesmall diameter end 20 of the valve plug receiving chamber.

apart transverse, preferably radial, passageways 22 and 24, the first ofwhich 22 is aligned, in the full on position of the valve, with theinlet passageway 26 and the second of which, 24, is aligned with thetransversely extending portion 28 of a main burner outlet passageway inthe valve body, the latter of which also includes an axially extendingportion 30 having associated with it the usual ad The plug is providedalso with a pair of axially and angularly spaced c) justable hood 32 bymeans of which the main burner outlet orifice (not shown) may beadjusted.

The valve body includes also a simmer burner outlet passageway 34leading from the small diameter closed end of the plug chamber throughan adjustablehood 36 to the simmer burner. The outlet passageways 3t)and 34 are formed respectively in externally threaded bosses 38 and 40on which the hoods are rotatably mounted.

The inlet passageway 26 is formed in a downwardly extending externallythreaded boss 42 by means of which the valve is detachably mounted uponthe usual gas supply manifold 44.

In accordance with the present invention, the valve is so constructedand arranged that the first operative position from the otf is the fullon position. This has the advantage that it provides first a full flowof gas for rapid heating from which the valve can be turned back towardthe off position for frying or from which it can be turned in the firstdirection to provide the full simmer and low simmer burning conditions.This arrangement also enables the ignition apparatus to be arranged tolight the main burner from which the simmer can be lit. This isfavorable under certain conditions.

As heretofore indicated, the full on position to which the valve plug isfirst turned is illustrated in Figs. 4 and 5. The valve is turned tothis position by movement in a clockwise direction, as about 86, fromthe off position. From the full on position the valve plug is movable toa full simmer position, as about 164 from the off position, in which thepassageway 24 is in registry with the inlet passageway 26. Upon furthermovement of the valve plug in the same (clockwise) direction, as toabout 218 from off, a low simmer passageway system, indicated as a wholeby reference character 50, connects the inlet 26 to the simmer burneroutlet passageway 34.

The low simmer passageway may be seen, particularly from Fig. 4, toinclude a first and counterbored portion 52 at the outer surface of thevalve plug which is so located axially of the plug that it registerswith the inlet passageway only. It is connected by a smaller diameterinclined passageway 54 to a multi-diameter axial passageway 56 extendingthrough the valve stem to the axial passageway 18 in the plug. Withinthis passageway 56 there is located an adjustable valve indicated as awhole by reference character 60 and by means of which the amount of gasflowing in the low simmer position can be regulated. This valve includesan outer fixed element 62 which is mounted as by a press fit in thepassageway 56 and an inner axially extending rotatable element 64 havingan enlarged outer end 66 provided with a screwdriver slot 68 whereby itcan readily be rotated through the passageway 56 when the valveoperating handle not shown is taken off the outer end of the valve stem58. The fixed element 62 is provided with an external annular passagewayor groove 70 which communicates with the passageway 54 in the valveplug. The fixed element is also provided with a radial opening 72 andthe rotatable element 64 with a similar opening 74, communicating withthe axial passageway 76 open at one end to axial passageway 18 in thevalve plug, so that upon rotation of the element 64 the openings can bebrought more or less into full registry, thereby to regulate the amountof gas flowing in the low simmer position of the valve. Further detailsof construction of the stem adjustment valve 60 may be obtained from thePeterson Patent No. 2,590,569.

The valve 10 may be provided with suitable position determining andindicating means. For example, the limit positions may be determined bya washer 80 constrained for movement with the valve stem and including aradial projection 82 engageable with the stops 84 and 86 (see Fig. l)which stops determine the off and low simmer positions, respectively.The position indicating mechanism includes also structure mounted withina housing indicated generally by the reference character 88 againstwhich the disk is biased by a spring 90 encircling a portion of thevalve stem and which spring also holds the valve plug seated in the plugchamber. The housing 88 comprises a cuplike rear portion 92, the outerend of which is closed by a plate 94. The two parts are held inassembled relation relative to each other and to the valve body by thesecuring screws 96 passing therethrough into suitable threaded openingsin the valve body. Within the housing is a detent disk 100 havingassociated therewith a disk engaging spring 102. The disk and spring areso constructed and arranged that various operative positions of thevalve are readily indicated to the operator of the valve. For furtherdescription of the position indicating and determining mechanismreference may be had to the co-pending application of Philip S. Harper,Serial No. 554,484, filed November 2, 1955, and which is a continuationof application Serial No. 162,446, filed May 17, 1950, now abandoned.

From the foregoing detailed description, it is apparent that the valveof the present invention can be constructed simply and economically inas much as relatively few passageways are required in the valve body andplug to give the desired operating conditions, as well as sequence ofoperation. As indicated heretofore, the passageways 22 and 26 and thepassageways 24 and 28 are aligned in the full on position, to which theplug is moved in a clockwise direction as viewed from the stem end. Atthis time, as shown in Figs. 4 and 7, particularly, it will be seen thatfull quantities of gas as determined by adjustment of the hoods 32 and36 will be supplied to the main and simmer burners, respectively. Fromthe full on position to which the valve is generally first turned inorder to provide adequate ignition, the valve plug may be turned ineither direction. If turned toward the off direction, the supply of gasto the two burners is gradually decreased. When the valve plug is turnedfrom the full on toward the off position, the passageway 22 in the valveplug begins to register with the main outlet passageway 28 while it isstill in registry with the inlet passageway. However, upon furthermovement of the valve plug toward its off position, the supply of gas toboth burners is gradually decreased at the inlet, thereby providing agradual as well as even turn down of the gas to both burner sections.

In going from the off toward the full on position passageways 22 and 24gradually come into full registry with passageways 26 and 28, thereby tosupply increasing quantities of gas to both the main and simmer burneroutlet passageways. It should be noted that passageways 22 and 26 aresomewhat larger than pasageways 24 and 28 (.204 inch as compared with.193 inch) and that the angular and axial spacing between the two setsof passageways is so small that passageway 22 provides communicationbetween the inlet passageway 26 and main outlet passageway 28 in aposition intermediate the off and full on positions, the passageway 22bridging passageways 26 and 28 before passageway 24 moves out ofregistry with passageway 28.

In going from the full on position toward the full simmer position (i.e. from Fig. 7 toward Fig. 8), it should be noted that the arrangementof the passageways is such that gas is supplied continuously to thesimmer outlet passageway first through passageways 22 and 18 and thenthrough passageways 24 and 18 so that a full supply of gas is suppliedto the simmer burner. At the same time, the flow of gas to the mainburner is gradually decreased and finally cut off by passageways 24 and28 going out of registry.

The arrangement of passageways according to which passageway 24 beginsto register with inlet passageway 26 before passageway 22 goes out ofregistry with it is thus such as to eliminate a so-called carryoverpassageway required in other valves of this character to supply gas tothe simmer burner in a carryover range between the full on and fullsimmer positions. The arrangement also enables the valve to be madesmaller, that illustrated being of a size comparable to single valves inso far as the plug is concerned. The use of a small plug enables thebody to be made smaller, as well.

Continued movement of the valve plug in the same direction moves it tothe low simmer position indicated in Fig. 9. It will be noted from acomparison of Figs. 8 and 9 that as the valve plug is moved from thefull simmer to the low simmer position the passageway 24 moves out ofregistry with the inlet passageway 26 while the low simmer passagewaysystem 50 moves into registry with the inlet passageway 26 until,finally, in the low simmer position, only the passageway 50 is inregistry with the inlet. As a result, a predetermined low quantity ofgas is supplied to the simmer burner only.

While the present invention has been described in connection with avalve in which the plug is moved in a clockwise direction from the offat one limit to the low simmer at the opposite limit, it should beunderstood that the valve could just as well be constructed for movementin the opposite direction. It should be understood further that whilethe present invention has been described in connection with theparticular details of one embodiment thereof, these details are notintended to be limitative of the invention except as set forth in theaccompanying claim.

Having thus described my invention, What I claim as new and desire tosecure by Letters Patent of the United States is:

A double gas valve for double gas burners of the type comprising mainand simmer burner sections, including in combination, a valve bodyincluding an axially extending tapered plug receiving chamber and atapered valve plug rotatably mounted in said chamber, said valve bodyincluding a gas inlet passageway opening into said plug receivingchamber intermediate the ends of the plug, said valve body having a mainburner outlet passageway opening into said chamber at a point angularlyspaced from the inlet passageway and also spaced 9. short distanceaxially from the inlet passageway toward the smaller end of the plugreceiving chamber, said valve body having also a simmer burner outletpassageway communicating with the end of the plug receiving chamber,said valve plug including an axial passageway continuously open to theend of the plug receiving chamber and thus to the simmer burner outletpassageway, a pair of passageways leading from the exterior of the plugsurface to said axial passageway and a first of which is aligned withthe inlet passageway and the second of which is aligned with the mainburner outlet passageway in a first and full on position of the valveplug, the first of said pair of passageways also being of a size tobridge across said inlet and main burner outlet passageways, said valveplug having another passageway leading from its exterior to the axialpassageway and including flow restricting means for supplying a lowquantity of gas to said axial passageway, said other passageway havingan opening on the plug surface which is spaced axially nearer the largerend of the plug than the center of the first of said pair of passagewaysand also angularly spaced from the others and so located as to registeronly with the inlet passageway in the body, and the angular and axialspacings of said various passageways being such that the valve plug iseffective in an off position to close the inlet passageway while thefirst of said pair of passageways is in registry with the main burneroutlet passageway and is operable from said off position in onedirection, first,

through a turndown range in which the first of said pair of passagewaysbridges the inlet and main burner outlet passageways to a full onposition in which gas is supplied to both the main and simmer burneroutlet passageways from said inlet passageway through the first of saidpair of passageways in the plug registering with the inlet passageway,the axial passageway in the plug open to the simmer burner outletpassageway and the second of said pair of passageways in the plugregistering with the main burner outlet passageway, second, to a fullsimmer position in which said main burner outlet is closed and gas issupplied at a full rate to the simmer burner outlet passageway only fromthe inlet through the second of said pair of passageways registeringwith the inlet passageway and said axial passageway, and, third, a lowsimmer position in which the main burner outlet passageway is closed andsaid other passageway registers with the inlet passageway to supply thesimmer burner outlet passageway only with a low quantity of gas throughsaid axial passageway.

References Cited in the file of this patent UNITED STATES PATENTS2,252,134 Mueller Aug. 12, 1941 2,299,624 Harper Oct. 20, 1942 2,632,467Lamar Mar. 24, 1953 2,632,469 Lamar Mar. 24, 1953

